Question

A ball is equipped with a speedometer and launched straight upward. The speedometer reading after two seconds is 40 m/s; the ball is moving upward. At what approximate times would the ball display the following speedometer readings; 0 m/s and 30 m/s

Answer 1

Step-by-step explanation:

u=uo-gt

40= uo - 10•2

uo= 60m/s

u= uo-gt

0= 60- 10t

t= 6 sec

u=uo-gt

30=60-10t

t= 3 sec